Add netbird-bin package

Only contains the binary release for amd64 atm. Have not had time to
figure out the build process / add more arches.

Will also probably be a little buggy still. There's a system service
included which needs to run for netbird to work.

Setup is a tiny bit cumbersome in that you have to enable the service
_first_ (which will complain about no auth found) and then manually run
`netbird up` with your pre-shared key or sso or whatever method you
choose to authenticate.

srcpkgs/netbird-bin/template

@@ -0,0 +1,21 @@
+# Template file for 'netbird-bin'
+pkgname=netbird-bin
+version=0.39.1
+revision=1
+archs="x86_64"
+short_desc="Connect your devices into a secure WireGuard-based overlay network with SSO, MFA and granular access controls."
+maintainer="Marty Oehme <contact@martyoeh.me>"
+license="BSD-3-Clause"
+homepage="https://github.com/netbirdio/netbird"
+distfiles="${homepage}/releases/download/v${version}/netbird_${version}_linux_amd64.tar.gz"
+checksum=ac4dbf589cf33dc1c347a6dba569cdcaf8a6915f88c6a7baffdb35fcf9b954f0
+
+do_install() {
+    vbin netbird
+}
+
+post_install() {
+    vsv netbird
+    vlicense LICENSE
+    vdoc README.md
+}